Specifications: Model: DC-DC 12V TO 56V/57V 3A 5A BOOST Applications: Industrial automation control, research equipment, LED lighting, industrial control equipment, car equipment, power equipment, instrumentation, refrigeration air purifiers, electronic refrigerators, LCDs, LED displays, audiovisual products, security systems, digital products, and various instruments. User's Manual: Converts 12V battery voltage to 56V/57V DC. Not to be fully loaded for long-term use; recommended at 50% maximum power for optimal performance. Precautions: Ensure correct polarity and use pure copper wires. Input and output cables should not exceed 2 meters to avoid voltage drop. Install a fuse or air switch at the input terminal. Ensure sufficient battery capacity and well-ventilated installation environment. Do not connect directly to solar panels or wind turbines. Non-charged models cannot charge batteries. Installation Steps: Secure all connections, ensuring correct polarity. Connect output terminals to load, input terminals to battery, and install a fuse or air switch. Verify all connections before powering up. Color: As Shown Material: Metal Package Contents: A converter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.